Column-stop mechanism for type-writers.



T. L. KNAPP & C. G. HARTING. COLUMN STOP MECHANISM FOR TYPE WRITERS.

APPLICATION FILED SEPT. 21, 1908.

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T. L. KNAPP & C. G. HARTING.

COLUMN STOP MECHANISM FOR TYPE WRITERS" APPLIUATION FILED SEPT.21,1908. 959,061 Patented May 24, 1910.

5 SHEETS-SHEET 2.

T. L. KNAPP & C. G. HARTING.

00mm STOP MECHANISM FOR TYPE WRITERS.

APPLICATION FILED SEPT.21. 1908.

Patented May 24, 1910.

5 SHEETS-SHEET 3.

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COLUMN STOP MECHANISM FOR TYPE WRITERS.

APYI-IOATIOR FILED 8EP'I'.21, 1908.

959,06 1 Patented May 24, 1910.

5 SHEETS-SHEET 4.

T. L. KNAPP & G. G. HARTING.

COLUMN STOP MECHANISM FOR TYPE WRITERS.

APPLICATION FILED SEPT.2I, 1908.

Patented May 24, 1910.

5 SHEETS-SHEET 5.

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LJINITED sTArEs PATENT OFFICE.

THEBON L. KNAPP AND CLAYTON C. HARTING. OF WOODSTOCK. ILLINOIS. ASESIGNORS TO THE OLIVER TYPEWRITER COMPANY, OF CHICAGO. ILLINOIS, A CORPORATION OF ILLINOIS.

COLUMN-STOP MECHANISM FOR TYPE-WRITERS.

Specification of Letters Patent.

Patented May 24, 1910.

T 0 all whom it may concern:

Be it known that we, Tnnnox L. Kiurr and Cannon C. I'IARTIXG, citizens of the United States, and residents of \Voodstock, in the county of Mcl lenry and State of Illinois, have invented certain new and useful .lmprm'ements in Column-Stop Mechanism for 'lype-Writers; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to an improved tabulating or column stop mechanism for typewriting machines designed to effect the release of the carriage from the control of the usual letter-spacing devices and permit the carriage to move, under the action of its actuating spring. to a predetermined point or points, at. which the movement of the carriage is arrested, for the purpose of printing a series of items or numbers in one or more vertical lines or columns upon the sheet. The invention relates more particularly to that class of column stop devices in which the carriage is provided with one or more adjustable stops which are mounted, and are longitudinally adjustable, upon a longitudinal member of the carriage frame and which are adapted to operate in connection with a key-actuated stop-member which is movable into and out of the path of the stop or stops upon the carriage.

The invention is herein shown as applied to a typewriting machine of the kind known as the Oliver machine, but the features constituting the invention may be applied to machines of other kinds.

The invention consists in the matters hereinafter set forth and pointed out in the appended claims.

In the accompanying drawings illustrating our invention: igure 1 is a view in central vertical sectionof a typewriting machine embodying our invention. Fig. 2 is a plan iew of the machine with the papercarriage and typebars removed, showing the type-bar supporting standards in section. Fig. 3 is a view in central vertical section on an enlarged scale of the shift-frame and paper-carriage of the machine. Fig. 4 is a vertical section, taken u on line 4-4 of Fig.

3. Fig. 5 is a horizonta section, taken upon line 5:'') of Fig. 3. Fig.' (3 is a face or front view of a paper carriage of the machine showing the adjustable stops thereon. Fig. 7 is a horizontal section, showing parts of the carriage and the sto anechaarsm on the shift-frame, taken on line 77 of Fi Fig. 8 is a perspective view of one o the stops on the carriage. Fig. 9 is a view showing, detached from the other parts, the connccting bar forming part of the means for operating the carriage-release devices. Fig. 10 is a perspective view of the stop-lever on the frame of the machine. Fi". 11 is a perspective view of the key-lever y which said stop-lever is operated. Fig. 12 is a detail sectional view on an enlarged scale of the shift-frame, paper-carriage and adjacent parts of the machine, taken on the indirect line 1212 of Fig. 2. sect-ion taken on line 13-13 of Fig. 2. Fig. 14 is a detail section taken on line 14l4- of Fig. 12. Fig. 15 is'a detail section taken on line 1515 of Fig. 2.

As shown in said drawings. A (Figs. 1 and 2) indicate the base-frame of a typewriting machine, and 1 indicates the frame by which the paper-carriage is immediatety supported and which has shifting movement backwardly and forwardlyon said baseframe and whichis herein called the shiftframe The paper-carriage has endwise or letter-space movement on said shift-frame and said shift-frame has backward and forward movement on the paper-carriage to provide for shifting the platen in such manner as to bring the paper in position for receiving impressions from two or more types upon each type-bar of the machine.

Figs. 1 and 2 of the accompanying drawings illustrate the parts mounted on the basesfra-me A and which are not directly concerned with the present invention, said parts'being one of the type-bars B, the keylevers C, one of which is shown as connected with the type-bars B by a link I). the universal bar D and one of its supporting arms (Z,

a rock-shaft E through which the shiftframe 1 is moved or actuated and which 15 provided with an upwardly extending arm 6 connected with the shift-frame by a link 42, a spacing key F, one of the spacing-key levers'f, and a link f by which motion is transmitted from the spacing-key to the uni- .versal bar D. Said shift-frame is shown in said Fig. 1 as provided with a rearwardly extending rigidly attached guide-rod Gr which rests at its rear end on a guide-roller g mounted on .the frame A, said guide-rod G being provided with stop-nuts g g adapted for contact with a standard G on the baseframe A. 11 indicates the escapemcnt lever of the machine which is mounted on the shift-frame 1 and is operated from the universal bar D by means of an upright rod H The parts above described correspond with the similar parts heretofore employed in what is known as the Oliver typewriting machine. Said shif -frame is provided with front and rear horizontal guide-rods 2 and 3, extending transversely of the machine, on which travel the supporting rollers 4 and 5 of the carriage during the endwise or letter-space movement of the carriage. The frame of said carriage, as shown, consists of end plates 6 and 7 and forward and rear longitudinal frame bars or members 8 and 9 hich extend between and rigidly connect said end plates. 10 indicates the paper roller or platen of the carriagc which is mounted on the end plates 6 and 7, in the usual manner. The said longitudinal front frame member 8 of the paper carriage constitutes the rack-bar thereof and is provided on its front edge with a series of ratchet teeth 11 which are engaged by a gear pinion 12 mounted on the upper end of an upright shaft 13 mounted on the forward part of the shift-frame. Said shaft 13 has, at its lower end, an escape wheel 14: which is part of the escape mechanism which is operated by the universal bar of the machine and by which is controlled the endwise or letter-space movement of the carriage under the action of the carriage actuating spring. The escape wheel shaft 13 has a hearing at its lower end in a forwardly projecting arm 15 on the lower art of the shift-frame and at its upper en engages a bearing block 16 (F ig. 5} which is adapted to slide horizontally in a guide slot formed in the upper end of a braclret 17, which is attached to and projects forwardlyirom the shift-frame. The sliding movtmentof the bearing block 16 in the said bracket 17 ermits the gear pinion 12 to be move or shifted :forwardly and backwardly into and out of engagement with the ratchet teeth 11 and said block is held at the inward limit of its movement by an expansively acting coiled spring '18 applied between the outer face of said block and the outer end ofthe slot in the bracket 17.

19 indicates the release bar of the carriage which is arranged horizontally above ,the frarue bar 8 and adapted to slide thereon in a horizontal lane. Said release baris provided with oiilique slots 21 engaged by studs which rise from saidframe bar 8. Said release bar is held at the rearward limit of its movement by a coiled spring 22 ranged longitudinally at the left-hand end of a carriage. and adapted to act upon the left-hand end of the release bar in such manner as to throw the same forwardly and toward the left when pressure is applied to the outer end of said trip-rod. A pivoted lever 2-l is tll 0 located at the right-hand end of the carriage and is adapted to also act upon the release bar to throw the same forward against the action of the spring 32. Said release bar is provided at its forward edge with an upturned or vertical, marginal flange which has bearing contact with a rotatire ring or roller 26 mounted on the escape wheel shaft 13 above the gear pinion 12, When said release bar 19 is in its retracted position. the pinion 12 remains in engagementwith the ratchet teeth on the carriage frame, but when said release her is thrown forward the pinion is forced out- 7 wardly or forwardly far enough to disengage it from the said ratchet teeth and thereby rele-ise the carriage from the escape mechanism, by which letter-space movement thereof is controlled. So far as described, the parts are constructed in the same manner as in the Oliver ty ewriting machines as heretofore constructed The front frame member or rack-bar 8 of the paper-carriage is rovided with a depending, longitudinal ange 27, which preferably extends the entire len h thereof. Said flange is, rovide' at its lower edge with a plurality of notches and preferably bears on its front face a scale, marked to correspond with the letter-space movements of the carriage. Mounted on said flange 27 are adjustable stopmembers 28. Each of said stop-members, as clearly seen in Fig. 8, consists of a metal block provided in its upper part with a notch to receive the flange 27 and having at its lower part an upwardly extending tooth 31 adapted for engagement with the notches on the lower edge of the said flange. In the particular orm of the stop-member shown, the same consists of two arallel separated plates 29 and 30 joine by a transverse connecting part on the upper edge of which is formed the tooth 31. The plate 29 is located in contact with t e front face of the flange 27 and is proviced near its upper edge with a stud 32 which projects rearwardly therefrom and is adapted to engage a longitudinal groove 33 formed in the front face of the flange 27. The plate 30 engages the 1111i face of the flange 2i and is provided with a spring arm 34 which projects upwardly and toward the left and is adapted to hear at its free end upwardly against the lower surface of the rack-bar 5 to turn or rotate the stop-member about the stud 32 in a direction to liftthe tooth 31 or hold the same in engagement with one of the notches in the lower e ige of the flange 27. To shift or move the stop-member on the flange :27. its right hand end is drawn downwardly to release the tooth 31 from the notch engaged thereby and the stop-member is then slid along the flange to the desired point thereon. \Vhen the stop-membe! is released itssaid right hand end is,

5 extending arm 39 of the lever 36 by means i tween the key-lever and the said bar.

by the action of the spring 34, thrown up wardly to bring the said tooth into engagement with another notch of the flange.

35 indicates a ke -actuated stop on the shift-frame. which is movabl vertically thereon to bring it into and out, of the path of the stop-members 28 on the carriage. Said stop 35 is attached to the rear or inner end of a lever 36, arranged to extend from frontto rear of the machine and pivoted on the bracket. 17 of the shift-frame. A vertically arranged plate 40 is shown as attached to the forward end of the bracket 17, so as to close the forward c :(l of the slot therein. Said plate extends telow the said bracket and through its lower clld is inserted a horizontally arranged pivocrod 37 which projects beyond the right hand face of said plate 40 to form a journal or bearing for the said lever 36. At its forward end the lever 36 is provided with two rigid arms 38 and 39: the arm 38 constituting a forward extension of said lever and the arm 39 projecting upwardly from the pivotal axis thereof. To limit the upward swing of the lever 36 when the stop-member 35 is elevated and in the path of the stop-members 28, a horizontal stop-arm 52 is attached to the to surface of the shift frame and projects orwardly at. the right of the bracket 17. The lever 36 is extended at its rear end rearwardly from the sto anember 35am] is adapted for contact witli the lower surface or the ired stop arm 52.

41 is a key-lever mohnted on the bracket 17 so as to swing on an axis concentric with the pivot of the lever 36 and projecting for- Ward from said bracket. Said key-lever is preferably mounted on the pivot-nod 37 centrally of the bracket 17; its rear end being inserted in a vertical slot formed in the lower edge of the plate 40. Said key-lever is provided at its outer endwith a key 42 'by which it may be operated. Said key lever is provided with a stud 43 which projects from the right-hand face thereof in position to engage the under side or lower edge of the arm 38 on the lever 36. Said' key-lever 41 is connected with the upwardly of a contractile, coiled spring 44 connected at one end with said arm 39 and at its opposide end with the key-lever at a point forward of said arm. The spring is conveniently connected with the key-lever by means of a stud 45 attixed to and projecting from the right hand side of said key-lever. h'aid spring it tends to draw the upper end of the arm 39 forward and to hold the arm 38 in contact with the stud 43 on th key-lever. Said key-lever 41 is provided with a lifting spring by which its front end is held normally elcvatedzsaid lifting spring. as shown in the drawings, consisting of a c ntractile coiled spring .31 which is connected at one end with the stud 45 and at its other end with the plate 40.

The key-lever 41 is ma normally in its elevated position by the spring .31; the upward movement of the outer end of said kc)" lever under the action of said spring being limited by contact of the vertical shoulder on the rear face of said key-lever wi h the front face of the plate 40. The downward movement of said key-lever is limited by an adjustable stop-plate 53'which is secured to the left hand side face of the bracket 17 and is provided with a transverse, horizontal stop-arm that extends over the top of the bracket 17 in front of the sliding block 16 and in the path of the upper end of said block which extends above said bracket. Said stop plate 53 is sccured to the bracket 17 by a screw (Fig. 1:) passing through a horizontal slotin the plate, affording backward or forward adjustment of said stop plate. l

The key-lever llis provided at its rear or'pivoted end with' an upwardly extending rigid arm 46, the upper end of which is connected with a horizontally arranged connecting bar l7, through the medium of which motion is transmitted from the keylever to the upper end of the escape wheel shaft. 13. Said connecting bar l7, as clearly seen in Fig. 3, is arranged above the level of the gear pinion 12 and is provided with an aperture through which passes a screw stud 54 which is inserted into the upper end of the shaft 13 and serves to retain thereon the rin or collar 26, and to connect the rear end of the bar37 with the said shaft. The upwardly extending arm 46 of the key-lever 41 is connected with saidbar 47 in a manner to afford lostmotion between said arm and bar, the parts for this purpose being constructed as follows: The bar 47 is provided at its forward end with a longitudinal slot 49 through which the upper end of the arm 46 of the keydever upwardly projects; the front and rear edges of the arm 46 being adapted for contact with the opposite ends of the slot 49. which is made long enough to afford the desired extent of los motion be- Said arm 46 of the key-lever may be provided, below the bar 47, with a transverse pin 50 to support the forward end of said bar.

In the normal or elevated position of said key-lever 41, the upper end of its arm 46 stands in a position intermediate between the ends of the slot 49 in the connecting bar 47 (Fig. 2 .so asto leave said bar 47 free to be moved forwardly with U 3 upper end of the escape-wheel shaft 13 when the latter is swung forwardly to disengage the pinion 12 from tn: carriage rack 111 the usual operation of the carriage release devices. When said key-lever 41 is depressed by downward pressure of the linger on the key 4:2. the lever 23 and the stop-member 35 thereon are swung or moved with the key-lever to lift the stopmember into the path of the stop-members 28, 28, on the carriage, such movement of the lever 36 with the key-lever all resulting from the fact that the s ring 44. which connects the arm 39 of sait lever 36 with the keylever, acts to retain the arm 38 on said lever 36 in contact with the stud 43 on the'keylever. The movement of said lever 36 with the key-lever 41 continues until the upward movement of said lever 36 is arrested by its contact with the lower surface of the stoparm 52, which occurs when the stop-member 35 is elevated sutliciently to bring it into the path of the stops on the carriage frame. The upper end of the arm 46 of the keylever, is so arranged with respectto the outer end of the slot 49 in the connecting bar 47 thatthe key-lever will be moved downwardly far enough to bring the stop-member 35 to its elevated or carriage arresting position before the arm 46 comes into contact:- with the outer end of said slot 49 in the connecting bar. \Vhen, in the downward movement of the key-lever 41, its arm 46, in the forward movementof the latter, strikes the outer end of said slot 49 in the bar 47, the said bar will be dmwn or shifLed outwardly or forwardly by the action of the key-lever, and the said bar, by the engagementof its inner end with the upper end of the escape-v. heel shaft 13 will draw forward the upper end of the said shaft 13, thereby releasing the pinion 12 from the carriage rack-bar and leaving the carriage free to travel or move toward the left until its movement is arrested by contact of one of the steps 28 with the stop-member The downward movement of the'key-lever may continue until the upper end of the shaft 13 reaches the forward limit of its movement, when further downward movement. of said key-lever will be arrested.

A typewriting machine equipped with column-stop or tabulatiug mechanism .-.=.:-h as is above described may be operatd "or ordinary writing in the usual manner without interference by reason of the presence of said mechanism. \Vhen it is desired to do tabulating work or to write a series of items or numbers in one or more columns on a sheet, one or more of the stop-members 28 are applied to the carriage and located at the required position or positions thereon according to the desired lateral location on the sheet, of the column or columns to be written. Then upon depressing the key-lever 41, the carriage will be released and run to the position determined by the firstor left-hand column stop, when the desired item maybe printed in the column. \V hen the printing of that item is completed. the key-lever 41 may again be depressed and the carriage will be released and allowed to run freely to the position determined by the Ferond stop, and the writing in the second col umn may be likewise effected. Similarly, the carriage may be released and stopped in position for printing a third or any other number of columns on the sheet.

In order to avoid undue shock or jar when the movement of the carriage is arrested by the action of the column stop mechanism, means for retarding or controlling the speed of the paper carriage when released and allowed to run, as described, is provided as follows:

60 indicates a bell-crank lever (Figs. 2 and 12) which is mounted in a bracket 61 attached to the side of the base-plate of the machine, at the left-hand side of the keylever -11. Said bell-crank lever has a forwardly projecting arm which extends beneath a stud 62 on the ke \'-lever l1, and a depending arm, to the lower end of which is pivotally connected the forward end of a horizontally arranged endwise sliding operating rod 63 which is mounted above the horizontal top of the. base-plate A and extends toward the rear of the machine.

64 indicates the spring barrel of the machine. in which is contained the carriageactuating spring and from which motion is communicated to the carriage by a flexible connecting member (35.

(36 indicates a bracket-inemlm' attached to the base-plate A at one side of the barrel (it and in which is pivotallv supported a rocking member 67 adapted to turn or swing in a horizontal axis arranged at right angles to the rod (33. Attached to said IUCiilllg member 67 (Figs 2 and 13) at: the rear of its pivotal axis is a sp ing" arm 68 which extends beneath and is adapted to bear upwardly against the s n'ing-barrel 64. Said spring-arm constitutes in effect a yielding brake-member. The rear end of the rod 6| bears against a forwardly facing surface of the rocking member below its pivotal axis o that rearward endwise nmvement of the :2ll\l rod operates to swing the rocking member in a direction to press the spr r-arm US upwardly against the springbarrel. The rear end of the rod 63 is suppor ed and guided in the bracket-member 66, and at coiled spring 69, interposed between said brackct-1nembcr and a collar 70 on said rod, tends to hold the rod at the forward limit of its movementand to hold the forwardly projecting arm of the bell-crank lever 60 in an elevated position and in contactwith the stud 62 on the key-lever 41. A forwardly extending rigid arm 71 on the rocking-member 6' is adapted for contact with the top of the bracket-member (3G in a manner to limit the upward movement of the springarm 38. When the key-lever 41 is depressed to elevate the stop 35, and to release the carriage, as hereinbefore described, the bellcrank lever is swung or moved so as to thrust. the rod 3 rearwardly and to press the spring arm ()8 into frictional contact with the spring-barrel, with the etlect of checking or retarding its rotary movement under the action of the carriage-actuating spring. The key-lever 41 has backward and i forward movement with the shift-frame on which it is mounted, and the stud 62 on said key-lever slides on the horizontal arm of the bell-crank lever 60 so as to act on said bellcrank lever with the same effect in all positions of the shift-frame.

A supporting roller 73 (Figs. 2 and 15) mounted on a bracket 72 and extending beneath the spring-barrel at a point diametrically opposite the spring-arm G8 acts to resist any tendency of the spring-barrel to tip or tilt on its upright pivot under the upward pressure of the spring-arm (38 againstthe said barrel. A guide lug 74-, attached to the frame-plate A, and engaging the central part of the rod 63, serves to prevent said rod from bending at its middle under the endwise pressure with a friction brake device ap lied to act on the springbarrel, as descri ed.

,A device is provided for checking the rotary motion of the escape wheel as follows: A spring-arm 75 (Figs. 12 and 14) is attached to and'extends downwardly from the key-lever 41. and is provided at its lower end with a curved brake-member 7 6 adapted for contact with the ends of the peripheral teeth on the escape-wheel when the keylever is depressed. The brake-shoe thus arranged and operated acts to hold the gearpinion 12 and escape wheel from turning during the time that the said gear-pinion is released from the carriage rack-bar, so that,

upon the reengagemcnt ofsaid pinion with said rack-bar upon the release of the keylever 41, the parts of the letterspacing mechanism \vill'be in the same relative Jositions as they were before the release 0 the carriage an the regular action of said letterspacing mechanism will not be affected by such release of the carriage therefrom and its subsequent reengagement therewith.

We claim as our invention i 1. In a typewrit-iug machine, the combination of a base-frame, a shitt'frame movable bacluvardly and forwardly thereon, a papercarriage movable on said shift-frame, and a spring-barrel mounted on the baseframe, through the medium of which endwisc mover gnt is given to the paper-carriage, letter spacing mechanism for controlling the movement of the carriage on the shift-frame, column-stop mechanism for releasing said carriage from the letter-spacing mechanism and arresting its movement at a desired point, embracing a key-lever for operating said column-stop mechanism mounted on said shift-frame, brake mechanism mounted on the base-frame and acting on the springbarrel, and means for actuating said brake mechanism from the key-lever embracing a movable member mounted on the base-frame and adapted to be acted upon by the keylever in allpositions of the shift-frame.

2. In a typewriti'ng machine, the combination of a base-frame a shift-frame movable backwardly and forwardly thereon, a papercarriage movable on said shift-flame, a spring-barrel mounted on the base-frame, through the medium of which endwise movement is given to the papcr-carriage, letterspacing mechanism for controlling the movement of the carriag on the shift-frame, and column-stop mechanism for releasing, said carriage from the letter-spacing mechanism and arresting its movement at; a desired point, embracing a key-lever for operating said columnstop mechanism mounted on said shift-frame, a brake mechanism mounted on the base-frame .and acting on the springbarrel, and means for actuating said brake-mechanism embracing an actuating lever mounted on the machine frame, and which is provided with a horizontal arm located at one side of the key-lever, said key-lever being rovided with a laterally extending stud a apted to act upon the said horizontal arm of the brake actuating lever in all positions of the shift-frame.

3. In a typewriting machine, he combination of a base-frame, a shift-frame movablebackwardly and forwardly thereon, a papercarriagc movable endwise on said shiftframe, a spring-barrel mounted on the baseframe, through which endwise movement is given to the paper-carriage, letter-spacing mechanism for controlling movement of the carriage 0n the sliift-f1*aine, an(l columnstop mechanism for releasing said carriage from the letter-spacing mechanism and arresting its movement at a desired point, embracing a key-lever mounted on said shiftframe, brake mechanism for the spring-barrel embracing a rocking member pivotally sup orted on the base-frame and provided W1 a brake-arm for contact with the spring-barrel, a brake actuating lever mounted on the machine frame by the said heylever in all positions of the shift'frame, and an endwise movable operating rod on the base-frame, said rod being actuated by said operating lever and acting upon the said rocking member to press the brake-arm against the spring-barrel.

4. In a typewriting machine, the combination of a base-frame, a shift-frame movable backwardly and forwardly thereon, a papercarriage movable endwise on said shir frame, a spring-barrel throughthe medium of which motion is given the paper-carriage, letter-spacing mechanism for controlling the movement of the carriage on the shiftframe, and column-stop mechanism for re leasing the carriage from the letter-spacing mechanism and arresting its movement at a desired point, embracing a key-lever for operating said column-stop mechan sm mounted on said shift-frame, brake mechanism adapted to act upon the said springbarrel and embracing a rocking member pivoted to the base-frame and provided with a brake-arm for contact with the springbarrel, a bell-crank lever ivoted on the machine frame and provided with a depending arm and with a forwardly extending arm located at one side of and adjacent to the said key-lever, said key-lever being provided with a laterally extending stud engaging said horizontal arm, an endwise sliding operating rod connected with the depending arm of said bell-crank lever, the rear end of said rod being adapted to act upon the said rocking member, and a spring applied between the said operating rod and the base frame and acting to'hold said rod at the forward limit of its movement and the bellcrank lever with its fogwardly extending arm adjacent to the said stud upon the keylever.

5. In a typewriting machine, the combination ofa base-frame, a paper-carriage, a spring-barrel mounted on the base-frame, through the medium of which endwise movement is given to said paper-carriage, letterspacing mechanism for controlling the movement ofthe carriage, and column-stop mechanism for releasing said carriage from the letter-spacing mechanism and arresting its movement at a desired point, embracing a key-lever, a brake-mechanism provided with a brake-arm which presses upwardly on the spring-barrel, connections between said keylever and the brake mechanism for operating the latter, and a supporting roller lor the spring-barrel, mounted on the base-frame beneath the spring-barrel at a point diametrically opposite the brake-arm.

6. In a typewrit-ing machine, the combination of a paper-carriage provided with a i l l l l l l I 1 given to the paper-carriage, letter-spacing mechanism for controlling the movement of the paper-carriage, embracing an escapewheel shaft provided with a gear-pinion adapted to be engaged with and disengaged from the carriage rack-bar, and with an escape-wheel, column-stop mechanism for releasing said carriage from the letter-spacing mechanism and arresting its movement at a desired point embracing a key-lever, and a brake-member actuated by the said key-1ever and acting on said escape-wheel to hold the same and its shaft from rotative movement when the paper-carriage is released from the Ietterspacing mechanism, said brake member being in the form of a curved shoe adapted to engage the points of the teeth of the cscapewhcel.

7. In a ty ewriting machire, the combination. of a base-frame, a shift-frame having backward and forward movement on said'base-frame, a paper-carriage movable endwise on the said shift-frame, said papercarriage being provided with a forwardly facing rack-bar, letter-spacing mechanism embracing a r( tive shaft provided at its upper end with a gear-pinion and at its lower part with an-escape-wheel, the upper end of said shaft and the pinion thereon being movable. toward and from the said rack-bar, column-stop mechanism for arresting the movement of the carriage at a desired point, embracing a key-lever for operating said column-stop mechanism, said key lever being mounted on the shift-frame and having operative connection with the up er end of said escape-wheel shaft, and a bra 'e member operated by said key-lever and adapted to hold the escape-wheel and its shaft from turning when the said gearpinion is disengaged from the said rack-bar.

S. In a typewriting machine. the combination of a paper-carriage provided with a rack-bar, letter-spacing mechanism for controlling the movement of the carriage em bracing a shaft provided with a gear-pinion adapted to be engaged with and disengaged from said rack-bar and with an escape wheel, column-stop mechanism for releasing said carriage from the letter-spacing mech anism and arresting its movement at a desired point embracing a key-lever for operating said column-stop mechanism, and a spring-arm attached to said key-lever and provided with a brake-member'in the form of a curved shoe adapted to engage the points of the teeth of said escape wheel.

9. In a typewriting machine, the combination of a shiftframeprovided with a slotted bracket, :1 paper carriage having endwise movement on said shift-frame, said paper: carriage being provided with a rackbar, a letter spacing mechanism embracing rackbar, a rotative spring-barrel through i an upright cs :ape wheel shaft provided with the medium of which endwise movement is 1 a gear proton and which is movable at its In testimony, that w e claim the foregoing as our invention we aflix our signatures in the prl-sancc of two witness-vs, this 15th day of Sep cinhci I). 1908.

TIIEHON L. KNAIP; CLAYTON C. HARTING.v

Witnesses;

A. J. MULLEN, \VM. H. O'BRIEN. 

